Home / 21,637.92-29,860-12,077.31

Finding the Fourth Proportional to 21,637.92, 29,860 and 12,077.31

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Solution

The fourth proportional to 21,637.92, 29,860 and 12,077.31 is: 16,666.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,637.92 : 29,860 = 12,077.31 : x
  2. Step 2: Convert to fraction form
    21,637.92/29,860 = 12,077.31/x
  3. Step 3: Cross multiply
    21,637.92x = 29,860 × 12,077.31
  4. Step 4: Simplify right side
    21,637.92x = 360,628,476.60
  5. Step 5: Solve for x
    x = 360,628,476.60/21,637.92
  6. Step 6: Final answer
    x = 16,666.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.